Granite straightedges are available in three precision grades: Grade 000, Grade 00, and Grade 0, each meeting strict international metrology standards. At ZHHIMG, our granite straightedges are crafted from premium Jinan Black Granite, known for its beautiful black luster, fine-grained structure, uniform texture, and outstanding stability.
Key Features of ZHHIMG Granite Straightedges:
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Material Excellence: Made from naturally aged granite formed over billions of years, ensuring exceptional dimensional stability and resistance to warping.
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High Strength & Hardness: Offers excellent rigidity and wear resistance, maintaining long-term accuracy even under heavy use.
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Precision Manufacturing: Hand-lapped surfaces deliver higher accuracy compared to cast iron straightedges, ideal for ultra-precise measurements.
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Scratch & Rust Resistance: Granite will not rust, deform, or be scratched by sliding workpieces, unlike softer metals.
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Lightweight Handling: Each straightedge features weight-reduction holes for easy lifting and positioning.
Available Sizes:
500×100×40 mm, 750×100×40 mm, 1000×120×40 mm, 1500×150×60 mm, 2000×200×80 mm, 3000×200×80 mm.
Granite vs. Cast Iron Straightedges – The Advantages:
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Stability: Cast iron straightedges require temperature-controlled environments to prevent deformation, while granite remains stable in normal working conditions.
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Higher Accuracy: Granite’s non-metallic, non-magnetic properties ensure superior measurement reliability.
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Durability: Granite does not suffer from rust, corrosion, or plastic deformation over time.
Applications:
Perfect for checking the flatness and straightness of machine tool tables, guideways, and other precision work surfaces. Ideal for high-accuracy inspection tasks in manufacturing and metrology laboratories.
Post time: Aug-11-2025